SSI and SSDI are separate programs with different rules

Supplemental Security Income (SSI) and Social Security Disability Insurance (SSDI) are both federal disability programs, but they work differently and serve different groups of people. SSI is a needs-based program — it looks at your income and assets to decide if you receive money. SSDI is an insurance program — you receive it because you or a family member paid Social Security taxes while working. You cannot receive both at the same time, though you can switch from one to the other under certain conditions.

The confusion happens because both programs use the same definition of disability (you must be unable to work for at least 12 months or have a terminal condition), both are run by the Social Security Administration, and both send monthly payments. But the path to getting them, how much you receive, and what happens to your benefits if you earn money are completely different.

Key Takeaways

  • SSI is based on your current income and assets; SSDI is based on your work history and the taxes you or a family member paid into Social Security.
  • SSI has strict resource limits (usually $2,000 for individuals); SSDI has no resource limit and does not count most of your savings against you.
  • SSI payments are the same nationwide; SSDI payments vary based on your or your family member's earnings record.
  • If you work and earn money, SSI reduces your payment dollar-for-dollar after a small monthly buffer; SSDI allows you to earn more before your payment is reduced.
  • You can receive SSI, SSDI, or both SSI and a reduced SSDI payment, depending on your work history and current finances.

How your work history determines which program you can receive

SSDI exists because you or a family member worked and paid Social Security taxes. If you became disabled before age 22, you might receive SSDI based on a parent's work record (called Disabled Adult Child benefits). If you worked yourself and paid taxes for roughly five of the last ten years before you became disabled, you can receive SSDI on your own record. The exact number of work credits you need depends on your age when you became disabled.

SSI has no work requirement. You can receive it if you are disabled, blind, or age 65 or older, regardless of whether you ever worked. This is why SSI is the program for people who became disabled very young, never worked, or did not work long enough to earn SSDI. If you do not have a work history that qualifies you for SSDI, SSI is often your only option.

Income and asset limits are strict for SSI, not for SSDI

SSI counts your income and assets to decide if you receive a payment. In 2024, the resource limit is $2,000 for an individual and $3,000 for a couple. This means if you have more than $2,000 in savings, cash, or certain other assets, you do not receive SSI. Your monthly income also matters — SSI reduces your payment if you earn money from work or receive other income.

SSDI has no resource limit. You can have $100,000 in savings and still receive your full SSDI payment. SSDI also does not count most types of income against you. If you receive child support, gifts, or help paying your rent from family members, SSDI ignores it. Only earned income (money from work) and certain other benefits reduce your SSDI payment, and even then, only after you earn above a monthly threshold.

This difference is why some people receive both SSI and SSDI: they have a work history that qualifies them for SSDI, but their SSDI payment is very small (because they did not earn much before becoming disabled), so they also receive SSI to bring their total income up to the federal benefit rate.

How work affects your payment in each program

If you work and earn money, SSI reduces your payment quickly. SSI allows you to earn $65 per month without losing any payment, then counts half of everything you earn above that. If you earn $200 per month, SSI subtracts $67.50 from your payment (half of the $135 over the $65 buffer). This makes it hard to work while receiving SSI because your payment shrinks as you earn.

SSDI has a higher work threshold called the Substantial Gainful Activity (SGA) limit. In 2024, if you earn more than $1,550 per month (or $2,590 if you are blind), SSDI assumes you are working and reduces or stops your payment. Below that amount, you can work and keep your full SSDI payment. SSDI also includes a Trial Work Period — nine months during which you can earn any amount and keep your full payment. After the Trial Work Period ends, your payment is reduced only if you earn above the SGA limit.

Payment amounts vary by program and your earnings history

SSI payments are uniform across the country. The federal benefit rate in 2024 is $943 per month for an individual (the amount changes each January). Some states add a small amount on top of the federal payment, but the base is the same whether you live in California or Mississippi.

SSDI payments are based on your or your family member's earnings record. Someone who worked for 40 years and earned high wages receives a much larger SSDI payment than someone who worked part-time for five years. The Social Security Administration calculates your payment using your average earnings before you became disabled. This is why two people with the same disability can receive very different SSDI amounts.

How to know which program you might receive

If you have a work history — you worked and paid Social Security taxes — start by checking whether you have enough work credits for SSDI. You can create a free account on ssa.gov and view your earnings record. If you have enough credits, you can file for SSDI. If you do not have enough work credits, or if your SSDI payment would be very small, you can also file for SSI at the same time.

If you never worked or worked very little, SSI is your program. You will not may have access to for SSDI on your own record, but you might may have access to as a Disabled Adult Child if a parent is retired, disabled, or deceased and you became disabled before age 22.

You do not have to choose one or the other when you apply. You can file for both programs at once, and the Social Security Administration will determine which one you receive or whether you receive both.

What happens if you receive one program and your situation changes

If you are receiving SSI and later become able to work enough to earn SSDI, you can switch. For example, if you receive SSI as a Disabled Adult Child, and then your parent dies, you may become able to receive Widow's or Widower's benefits (a form of SSDI) instead. The Social Security Administration handles the transition, though you should report the change as soon as it happens.

If you are receiving SSDI and your payment becomes very small (because your earnings record was low), you might also receive SSI to supplement it. This is called concurrent receipt. You receive both payments, though the SSI amount is reduced by the SSDI amount you get.

Frequently Asked Questions

Can I receive both SSI and SSDI at the same time?

Yes. If you have a work history that qualifies you for SSDI but your SSDI payment is very low, you can receive both. The SSI payment is reduced by the amount of SSDI you receive, so your total is higher than SSI alone but lower than if you received both at full rates.

If I switch from SSI to SSDI, do I lose my Medicaid?

Not automatically. If you receive SSI, you usually get Medicaid. If you switch to SSDI, you keep Medicaid for at least nine months (called the Medicaid continuation period), giving you time to understand your new coverage. After that, Medicaid depends on your state's rules for SSDI recipients. Many states provide Medicaid to SSDI recipients, but some do not.

What if I worked for only a few years — can I get SSDI?

It depends on your age when you became disabled. If you became disabled before age 24, you need only one and a half years of work in the three years before you became disabled. If you were older, you need more. The Social Security Administration can tell you the exact requirement for your age.

Does SSI count money my family gives me as income?

Yes. SSI counts gifts, money from family members, and help paying your bills as unearned income. This reduces your SSI payment. SSDI does not count these gifts, which is one reason SSDI is better for people who receive family support.

If I inherit money, what happens to my SSI?

An inheritance counts as a resource for SSI purposes. If the inheritance pushes you over the $2,000 resource limit, you lose SSI until you spend it down. SSDI does not count inheritances, so your SSDI payment continues regardless of how much money you inherit.